Question

At one of the booths, culinary students are explaining that every ingredient they use - from flour to meat to vegetables - contains the same four essential chemical elements. These elements combine in different ways to create all the molecules needed for life. Which four elements are these universal “building blocks of life”?
Question 4 options:

Carbon, Hydrogen, Oxygen, and Nitrogen are the four most common elements

Calcium, Hydrogen, Oxygen, and Nitrogen are the four most common elements

Carbon, Hydrogen, Sodium, and Potassium are the four most common elements

Carbon, Helium, Oxygen, and Nickel are the four most common elements

Answer 1

Carbon, Hydrogen, Oxygen, and Nitrogen are the four most common elements

These four (CHON) make up the backbone of carbohydrates, lipids, proteins and nucleic acids — the major molecules of life.